Riffle and amalgamator-box.



G. H. ODERS.

\ RIPPLB AND AMALGAMATOR BOX.

Patented May 19, 1914.

INVENTOR a'rfes @Z9/4.5'.

Afr-ro RN EY i paraat TES ATENT BFXCE.

ACil-ll-iliLElS H. ODERS, OF BEDDING, CALIFORNIA, ASSIGNOR TO SOPI-IY D. ODERS, OF REDDING, CALIFORNIA.

BIFFLE AND AMALGAMATOR-BOX.

Specication of Letters Patent.

Patented May 19, 1914;.

Application led February 3, 1913. Serial No. 745,806.

7'0 all whom it may concern Be it known that l, CHARLES H. Ooms, a citizen of the United States, residing at Redding, in the county of Shasta and State of California, have invented new and useful Improvements in Rihies and Amalgamator- Boxes, of which the following is a specification.

This invention relates to an' amalgamator of the ysluice box type.`

The object of the invention is to provide a simple, practical and compact amalgamator which is constructed with the main object in view of providing the largest amalgamating surface possible.

Another object of the invent-ion is to provide means for trapping any iioured amalgam or Quicksilver which might be removed from the plates by the scouring action of material passing over the plates.

A further object of the invention is to provide means for keeping the sands or lighter materials in suspension in the wash water so as to prevent choking or banking behind the riiiies in the box.

-The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a longitudinal section on line X--X, Fig. 2. Fig. 2 is a plan view of the apparatus.

Referring to the drawings, A indicates a rectangular-shaped amalgamator box, which may be constructed of any suitable material but preferably of heavy sheet iron. The bottom of the box is covered with a removable amalgamatingplate 2 and is also provided with a series of vertically positioned, removable amalgamating plates 3. The sides of the box may be grooved, or, as here shown, provided with cleats 4 for the purpose of holding the plate in position.

Positioned intermediate of the plates 3 and spaced a suitable distance above the bottom plate 2 is a second series of removable amalgamating plates 5 which are secured between the sides of the box by cleats, as at 6.

7 indicates a series of perforated spray pipes supported crosswise of the box between the plates 3 and 5 which are connected at their outer ends with a manifold or distributer pipe 8. This is in turn connected by a flexible hose or like means with a centrifugal pump or source of water supply having .sufficient pressure to operate the spray pipes 7.

Byreferring in particular to Fig. 1 of the drawings, it will be seen that the amalgamating box A is supported in a suitable framework B and is inclined in the manner of a sluice box to produce a natural iiow through the box. The pulp or sands discharged from the stamp mill which contain the amalgamable precious metals in a finely divided state is delivered, together with a sufficient Quantity of wash water, at the upper end of the box, as indicated at 9, through a funnel-shaped entrance or like device and is directed down toward the bottom plate where it is deflected and forced in an upward direction by the plate 3. It then passes over the top edge of the plate 3 and is again defiected downwardly toward the bottom plate by the plate 5 when the current iiow forces the pulp under the plate 5 against the second plate 3 where it is again deflected upwardly between the plates 3 and 5. it will then be seen that the pulp on passing through the box is constantly Vimpinged or broughtinto contact with the several amalgamating surfaces disposed in the box, thus giving ample opportunity to adhere to one of the amalgamating surfaces in the box.

The vertical amalgamating plates diS-V lbe provided with a suitable valve for the purpose of controlling the force of the downwardly directed stream discharging from the spray pipes, thus making it possible to adjust the force of the agitating water to a point where it will only remove the lighter sands and prevent banking of same.

The construction of the amalgamator box and the mounting of the plates make 1t Y possible to quickly remove or insert the different plates when it 1s desired to clean them, Without losing much time or requiring the employment of skilled mechanics.

The amalgamating box is simple and compact in construction and eliioient in its action and takes less space than similar apparatus. The materials and finish of the several parts of the amalgamator are such as experience and judgment of the manufacturer may dictate.

Having' thus described my invention, what claim and desire to secure by Letters Patent isl In an amalgamating apparatus, an inclined sluice with a rising` floor at thedischarge end, means to supply pulp and Water at the upper `end thereof, a removable amalgamating;` bottom plate, a series of removable transverse plates at right angles with said bottom plate and having their witnesses.

CHARLES H. ODER'S. Witnesses VILLARD D. TILLoTsoN, AMY V. DAILY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washingtomi). C. 

